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Note, the V2 modules are not compatible with older V1-based machines as we found in the 405 G4 Mini
HP DisplayPort Port Flex IO v2
$15.00
HP Flex IO Card DisplayPort HDMI VGA RS232 Port for EliteDesk 800 G4 ProDesk 600
$17.69
HP FLEX PRO POWER 24V CASH DRAWER
$64.79
Documentation